Hi,
can you temporarily make the page with [adverts_add] shortcode available to anyone (currently only logged in users can view it) so i can check the image gallery?
One other thing you can try is to disable the WP Fastest Cache plugin and see if it helps.
Hello
Thank you for your reply ! I did what you ask. I disabled WP Fastest Cache and nothing changed. I leave the site as you request.
Cordially
Hubert
Thanks, there is a following JavaScript error on the page with [adverts_add] shortcode
Uncaught TypeError: Cannot read property 'apply' of undefined
The error occurs in the TinyMCE files, unfortunately, it does not point to any plugin which might be causing the problem, but in the page source i see you have a WP Edit Pro plugin installed which integrates with the text editor.
You wrote earlier that the error happens only to non-admin users, so my guess is that this plugin fully loads only for Administrators and causes an error for other users.
Please try disabling it and see if it helps. If you have any other plugin installed related to TinyMCE editor then you can try disabling it as well.